Cylinder paper-making machine



@man 3 m2@ 2 @m2 A. 'E1 YODER A CYLINDER PAPER MAKING MACHINE Filed May27 i926 bz-l VET-1 TEL- e lPatented Apr. 3, 1928.

UNITED `sTA'rlazs'1 A'1ie:1-rr orner.

ARTHUR T. YODEB, OF lMOSIZBI'EE, WISCONSIN.

( YYII'JIN'DEB.y IP APERy-MAKING MACHINE.

Application-med lay 27,

This invention relates to cylinder paper making machines and moreparticularly to a silencer roll as applied to the vat of a cylindermachine. I

It is an important object of th1s1nvention to provide a silencer roll,or perforated drum, for use with cylinder machines, whereby boilingcurrents of stock may. be uieted in their flow to the cylinder mold, tus permitting the machine to be run `at higher speeds with theformation. of'a better sheet of paper.

It is a further important object of this invention to provide a cylinder.mold vatA wherein all of the stock going to thecylinder mold is baused,to pass through a silencer roll for the urpose of quieting the eddycur- -rents and e ectmg a uniform distribution of the stock. A

Other and further important objects of this invention will bel apparentfrom the disclosures in the specification and the accompanying drawings.

This invention (in a preferred form) is illustrated in they drawings andhereinafter more fully described.

On the drawings:

Figure 1 is a fragmentary broken top plan view of a cylinder mold vatshowing the installation of a silencer roll of my invention.

,Figure 2 is a sectional view taken on line lI-'-II of Figure 1. A

Thereference numeral 1 indicates a cylin-Y der mold vat, preferablymadeof heavy lumber tongued and grooved as at 2 and constructed in theusual manner, common in cylinder paper making machine installa' tions.Said vat 1 resembles a rectangular shaped box having a bottom wall 3, aback wall 4, and side walls 5 of the same height as said back wall alsopreferably formed of heavy lumber tongued and grooved and spaced fromthe rear walls 4 to form ahead box 21, extends transversely of said vat1 and terminates a. short distance below thel top of said vat Vwalls 5.A second transverse partition 7,

shaped approximately in an arc oa circle, is spaced from said verticalpartition 6 by means of av horizontal piece of timber 8 joined to thetop of said partition 6 and` to the rear wall of said partition 7. Theupper end of said partition 7 extends a short distance vertically abovethe horizontal .timber 8 to form a baie 9. Said partition 7 thus formswith the front portion of the vat 1,

4. A vertical.`A partition 6,.v

15126. serial No. 111,953.

`a cylinder mold vat 10 in which a cylinder mold 11 is adapted to berotatably mounted. Said cylinder mold 11 is ofthe usual construction andis covered with a wire facing 12 on which the web of paper is adapted tobe formed.

As is usual, stock enters the space 21 be.- tween the rear wall 4 andthe vertical part-ition 6, and .passes up over the baiiie 9 into thecylinder mold vat 10, where due to suction created within the cylinder'mold the pulp fibres are deposited upon the surface of the Wire 12, thegreater portion of the water in the stock passing through the wire. Inmy present construction 1 mount a silencer roll 13, comprising aperforated metaldrum, between the horizontal timber 8 and the top of thevat walls 5 and in front of the baille 9, in -such a way that all of thestock must pass through the perforations 14 of: said silencerroll. Thejournals 15 of said silencer roll 13 extend through ,'a driving shaft 18and .a suitable driving mechanism such asa speed reducer 19 and a motor20. The silencer roll 13 may be re-v volved at any suitable speed and ineither direction, depending on the .practical results obtained.

It will be noted that the diameter of the silencer roll 13 is preferablyexactly equal to .the Vertical distance between theupper face of thetimber 8 and the top edge of the side walls 5 in order to insure thepassing of all of the stock through said silencer roll 13 in its flowtothe cylinder vat 10. It would of course be possible to extend the wallsof the vat above the top of the silencer roll 13 but in that case anover flow should` be provided to` prevent the stock from iowing over thetop of said silencer roll 13. l

One of theprincipal advantages of the construction above described isthat the silencer roll 13 quiets and silences the boiling vstuilingboxes 16 in 'the side walls 5, Vand are rotatably mounted and eddying ofthe stock inits flow to the cylinder vat 10.- The silencer roll insuresa uniform velocity of stock across the width of the vat, thus tendingtoward a better formation on the wire '12 and also permitting thecylinder mold 11 to be run at higher speeds. One ofy the principaldifficulties in Inakingpaper on a cylinder machine is that unless thecylinder mold is run at a comparatively low speed the sheet `of paperformed is ymotions of the stock but also tends to cross the aperthefibres in their passage throu h tures 14 of the silencer roll. T iscrossing of the libres effects the formation of a much stronger sheetthan can be produced Without the use lof a silencer roll. `It should befur ther noted that the baile 9 serves to maintain a uniform head ofstock in front ofthe cylinder vat 1,0 and it also serves further toproduri?ll an even flow of stock to the cylinder mo I am aware that'many changes may be` made, and numerous details of construction may bevaried through a wide range without departing from the principles ofthis invention, and I therefore do not purpose limiting the patentgranted hereon, otherwise than necessitated by the prior art.

I claim as my invention: 1. In a cylinder paper machine, a vat for thecylinder mold havinga transverse par- .ffiow to the cylindermold.

2. In a cylinder paper machine, a vat for the cylinder having atransverse partition therein defining a head box for stock and acylinder vat for the cylinder mold, a vertical. bailie formed on saidpartition and a silencer roll positioned ahead of said baile andextending above the saine, whereby all of the stock passing to saidcylinder vat is forced to )ass through said silencer roll.

in testimony whereof I have hereunto subscribed my name.

ARTHUR T. YGDER.

